This is a COMPLETE SERVICE MANUAL for 1981-1986 Suzuki DT115 DT140 2-Stroke Outboard Motors on a CD.

Those are the same manuals your Repair Shop uses to repair and diagnose your engine.
This service manual describes the service procedures for the Suzuki 2-Stroke Outboards.
This model specific manual includes every service procedure that is of a specific nature to this particular model.